This is a message from the Museumpests List. To post to this list send it as an email to pestlist@museumpests.net To unsubscribe please look at the footer of this email. ----------------------------------------------------------- “Most insecticides fail because the spiders do not actually come in contact with them.“ Actually I think the information about spiders has been repeated but is not really true. Most PMPs and others have the idea that spiders must be walking on their claws akin to ballerinas dancing (walking on tiptoes) and this is not so. There are those spiders that crawl on 3 claws and those that crawl on 2 claws, with many of the latter also having tarsal pads or claw tufts. Also people believe that (adult, specifically) bed bugs cannot climb smooth, vertical surfaces because there are no tarsal pads compared to American roaches that have such pads and are known to walk on many surfaces including smooth, vertical ones. This is incorrect, too, since pest bed bugs have special leg adaptations to do so. A reason might be that the spiders do not stay for a long period of time on a treated surface or the material really doesn’t have a long residual life or that the applications aren’t really in areas where the spiders stay. Certain insecticides don’t work well against spiders although direct hit usually works. Dusts will adhere better on their bodies as compared to liquid preparations. There must be space by which prey items and spiders gain access into the structure. Recluse spiders are also long lived (living a few years, not annual species) and the populations may have built up over time and are not from very recent introductions. The population may be centered in the lower levels or basement area and crawl around to the upper levels. I’ve seen this in a NYC apartment building. We have a spider exhibit running through Dec. 2. http://www.amnh.org/exhibitions/current-exhibitions/spiders-alive
Louis N. Sorkin, B.C.E. Entomologist, Arachnologist Division of Invertebrate Zoology American Museum of Natural History Central Park West at 79th Street New York, New York 10024-5192 sor...@amnh.org<mailto:sor...@amnh.org> 212-769-5613 voice 212-769-5277 fax The New York Entomological Society, Inc. www.nyentsoc.org<http://www.nyentsoc.org/> n...@amnh.org<mailto:n...@amnh.org> From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Forrest St. Aubin Sent: Thursday, October 11, 2012 9:01 AM To: pestlist@museumpests.net Subject: Re: [pestlist] Brown Recluse This is a message from the Museumpests List. To post to this list send it as an email to pestlist@museumpests.net<mailto:pestlist@museumpests.net> To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Let's start with two questions: 1.) What do they appear to be feeding on?; 2.) How are the spiders and prey getting inside? Most insecticides fail because the spiders do not actually come in contact with them. Fogging can be very effective, but fogging can be highly deleterious to objects and artifacts within the museum. The answer to the problem is to reduce or eliminate access for both spiders and prey by tightening the building up as much as possible. Forrest E. St. Aubin, BCE Liaison, ESA/NPMA Chair, ESA-ACE Oversight Committee 12835 Pembroke Circle - Leawood, Kansas 66209 Phone: 913.927.9588 - Fax: 913.345.8008 E-mail: forr...@saintaubinbce.com<mailto:forr...@saintaubinbce.com> Website: www.saintaubinbce.com<http://www.saintaubinbce.com> "The trouble with the world is not that people know too little, but that they know so many things that ain't so." - Mark Twain -----Original Message----- From: "John Timothy" [timot...@bacone.edu] Date: 10/10/2012 10:28 AM To: pestlist@museumpests.net<mailto:pestlist@museumpests.net> Subject: [pestlist] Brown Recluse This is a message from the Museumpests List. To post to this list send it as an email to pestlist@museumpests.net<mailto:pestlist@museumpests.net> To unsubscribe please look at the footer of this email. ----------------------------------------------------------- I have been monitering our museum using sticky traps spread every 10 feet throughout. A significant number of brown recluse spiders were caught, seventy in a two month period of time. Fishing for suggestions on other ways to control them besides sticky traps. I gather insecticides are largely ineffective. -- John Timothy Ataloa Lodge Museum<http://ataloa.bacone.edu/> ---------------------------------------------------------------------- To send an email to the list, send your msg to pestlist@museumpests.Net<mailto:pestlist@museumpests.Net> To unsubscribe from this list send an email to pestlist@museumpests.net<mailto:pestlist@museumpests.net> and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to imail...@museumpests.net<mailto:imail...@museumpests.net> with this command in the body: set mode digest pestlist Any problems email l...@collectionpests.com<mailto:l...@collectionpests.com> or l...@zaks.com<mailto:l...@zaks.com> ---------------------------------------------------------------------- To send an email to the list, send your msg to pestlist@museumpests.Net<mailto:pestlist@museumpests.Net> To unsubscribe from this list send an email to pestlist@museumpests.net<mailto:pestlist@museumpests.net> and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to imail...@museumpests.net<mailto:imail...@museumpests.net> with this command in the body: set mode digest pestlist Any problems email l...@collectionpests.com<mailto:l...@collectionpests.com> or l...@zaks.com<mailto:l...@zaks.com> ---------------------------------------------------------------------- To send an email to the list, send your msg to pestlist@museumpests.Net To unsubscribe from this list send an email to pestlist@museumpests.net and in the subject put: "unsubscribe" - no quotes please. You are receiving the Pestlist emails in standard mode. To change to the DIGEST mode send an email to imail...@museumpests.net with this command in the body: set mode digest pestlist Any problems email l...@collectionpests.com or l...@zaks.com
